package JDBC_learn;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

public class JDBCDemo {
    public static void main(String[] args) throws Exception {
        //1.注册驱动
      //  Class.forName("com.mysql.jdbc.Driver");
        //2.获取链接
       // String url="jdbc:mysql://127.0.0.1:3306/itheima";
        //如果连接的是本机的myaql并且端口号是默认的3306可以简化书写
        String url="jdbc:mysql:///itheima?useSSL=false";
        String username="root";
        String password="11235813";
        Connection conn = DriverManager.getConnection(url, username, password);
        //3.定义sql
        String sql="update account set money=3000 where id=1";
        //4.获取执行sql的对象Statement
        Statement stmt = conn.createStatement();
        //5.执行sql
        int count=stmt.executeUpdate(sql);//受影响的行数
        //6.处理结果
        System.out.println(count);
        //7.释放资源
        stmt.close();
        conn.close();

    }
}
